Validation error of file while it works in BTS 02

i have 835 file that works in BTS 02 but fails in 2006 3.3 hipaa. with
message

Error encountered: ERROR (17), interchangenr 10020 :
The order of the segments is incorrect. Check the EDI schema.source
format: [5 00401 ,X12-4010]
source do***ent: [unknown]
source segment: [data#0,def#0,tag=~GS  ,name=unknown], do***ent is
still unknown (msgnr:0 segnr:0)(line:3 pos:0 filepos:399)

Function:
IdentifySegment

here is the GS segment
~GS*HP*100005*100005*20060503*1518*70*X*004010X091A1

and file has more than one GS segments. any idea. ????????